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    • 7. 发明授权
    • Denture fixative
    • 义齿固定剂
    • US5696181A
    • 1997-12-09
    • US532132
    • 1995-09-22
    • Tiang-Shing ChangDonna DiFerdinando
    • Tiang-Shing ChangDonna DiFerdinando
    • A61C13/07A61C13/23A61K6/00C09J129/10C09J135/08C08L93/00
    • C09J135/08
    • An improved denture adhesive composition is comprised of a highly cross-linked lower alkyl ether/maleic acid or maleic anhydride copolymer in which up to about 85% of the initial free carboxyl groups are reacted with one or more cross-linking agents. The cross-linking agents are mixtures of inorganic divalent cations such as calcium, magnesium and zinc together with organic bifunctional compounds comprised of polyhydroxyl compounds such as propylene glycol, glycerin and the like. The copolymer has a specific viscosity of no less than 1.5. A hydrophilic polymer such as sodium alginate or carboxymethyl cellulose may also be added to the lower alkyl vinyl ether/maleic acid or maleic anhydride copolymer which is then formulated with other excipients in a paste, powder, liquid, gel or cream composition.
    • 改进的义齿粘合剂组合物由高度交联的低级烷基醚/马来酸或马来酸酐共聚物组成,其中最多约85%的起始游离羧基与一种或多种交联剂反应。 交联剂是无机二价阳离子如钙,镁和锌以及由多羟基化合物如丙二醇,甘油等组成的有机双官能化合物的混合物。 共聚物的比粘度不小于1.5。 还可以将亲水性聚合物如藻酸钠或羧甲基纤维素加入到低级烷基乙烯基醚/马来酸酐或马来酸酐共聚物中,然后与糊状物,粉末,液体,凝胶或奶油组合物中的其它赋形剂配制。
    • 8. 发明授权
    • Reciprocating dental prophylactic angular device
    • 往复式牙科预防角度装置
    • US4544356A
    • 1985-10-01
    • US671739
    • 1984-11-15
    • John M. GardellaCasimir CiepierskiMichael AlfanoTiang-Shing Chang
    • John M. GardellaCasimir CiepierskiMichael AlfanoTiang-Shing Chang
    • A61C17/00A61C1/07
    • A61C17/005
    • A dental prophylactic device has a handle section containing a drive member and a driven section at a substantial angle to the handle section containing a driven member also at an angle to the driving member. The handle section includes a longitudinally oscillatable cam follower supported parallel to the handle axis. When the cam follower is translated around the axis by the rotation of the drive shaft, it is caused to oscillate by one end contacting the stationary cam follower track. The other end engages a slot parallel to the axis of a cam at an angle to the cam follower thereby causing the cam to oscillate back and forth over an arc of at least 50.degree. to approximately 150.degree., maintaining the connection between the cam follower and the cam by the use of the slot which permits the cam follower, in effect, to move up and down with respect to the cam as it oscillates. The cam oscillates a cup which may contain prophylactic material and the reversing action limits the ability of the material to be thrown out of the cup and obviates unintended movement of the cup over the surface of a tooth which occurs in the case of rotation in a single direction. A special sealing ring and its compartment, remotely located from the head of the spindle, provides an excellent seal.
    • 牙科预防装置具有手柄部分,该手柄部分包含驱动部件和被驱动部分,所述驱动部件和被驱动部分与手柄部分成大体角度,该部分包含与驱动部件成一定角度的从动部件。 手柄部分包括平行于手柄轴线支撑的纵向可摆动的凸轮从动件。 当凸轮从动件通过驱动轴的旋转绕轴线平移时,通过与固定凸轮从动轨道接触的一端使其摆动。 另一端与凸轮从动件的角度平行于凸轮的轴线接合,从而使凸轮在至少50°至大约150°的弧度上来回摆动,保持凸轮从动件和 通过使用允许凸轮从动件的槽的凸轮在实际上相对于凸轮在其摆动时上下移动。 凸轮摆动可能含有预防材料的杯子,并且反向动作限制了材料被抛出杯子的能力,并避免了杯子在牙齿表面上的意想不到的移动,这种情况在单一旋转的情况下发生 方向。 一个特殊的密封环及其隔间,远离主轴头部,提供了极好的密封。